A picture obtained by printing from a film of gelatine which has been sensitized with bichromate of potash and exposed to light under a negative…

Used attributively in designations of processes invented by Woodbury, as Woodbury-gravure, Woodbury-process; esp.

A modification of photolithography in which the picture is first printed on a sensitized gelatin film supported on paper before being transferred…

= collotype, n.; (also) gelatin of a type suitable for use in collotype printing.

= papyrography, n. 2. Obsolete.

= collotype, n.

a process in which a design on a film of gelatine, obtained from a photographic negative, is transferred by heavy pressure to a metal plate from…

The collotype process. Also: a print or impression produced by this process, a collotype.

A thin plate or sheet of gelatine, the sensitized surface of which has been etched by the action of the actinic rays, so that it can be printed…

A simplified form of the Woodbury process of photo-mechanical engraving in which a mould obtained from a positive instead of a negative is coated…

= papyrotype, n.

a photomechanical printing process similar to collotype; a picture reproduced by this process.

a photomechanical printing process similar to collotype.

the process or art of printing from a film of gelatine, esp. by the heliotype or collotype process.

= photomezzotype n.